4
that provide power for rubber-powered model aircraft. Tan
Super Sport rubber strip (see below) is formulated especially
for powering model planes and is sold by a number of the
above vendors, most notably F.A.I. Model Supply. When
used with a mechanical winder (see winder, below) and a
proper lubricant, rubber motors can be wound up to several
thousand turns to give long flights of several minutes
duration with a properly prepared free flight model.
Scale model: A model plane designed, built, and decorated
to closely resemble a particular full-size, man-carrying
aircraft. In competition, scale models are scored on their
depiction of the subject aircraft, overall craftsmanship, and
flight duration.
Stick-and-tissue: Model airplane jargon referring to the
traditional method of free flight model construction which
uses balsa wood sticks and pieces for the model’s framework
and tissue paper to cover it. This tissue is most often a fine,
lightweight grade imported from Japan called Esaki. Many of
the vendors on the above list sell Esaki tissue.
Stooge: Free flight slang for a fixture designed to securely
hold a rubber-powered model in place while it is being
wound for flight (see page 6). This omits the need for
another person to hold the model during winding. Once
wound, the rubber motor is hooked to the model, which is
then removed from the stooge and is ready for flight. Some
vendors, such as F.A.I. Model Supply, sell stooges. Some
web sites have pictures of various styles of stooges.
Super Sport Rubber Strip: The brand name of rubber strip
specifically formulated for powering model airplanes. It’s
sold in long continuous strips of various widths, usually
1/16, 3/32, 1/8, 3/16, and ¼ inch. Its thickness is
approximately .045 inch. Rubber-powered models fly using
one or more loops made from one of these widths. F.A.I.
Model Supply (see vendor list, above) of Sayre, Pennsylvania
markets Tan Super Sport to both modelers and vendors and
works directly with the U.S. manufacturer to constantly
monitor and maintain its quality. Some vendors strip it into
an even wider range of thinner widths required for flying
various classes of ultralight indoor models. Most serious
modelers have their own rubber strippers, but these very
useful tools are expensive. See Thayer Syme’s web site (see
below) for pictures of various models of rubber strippers.
Tools: Basic tools for model airplane building include a flat
work surface such as a sheet of smooth ceiling tile or
homosote, a supply of single-edge razor blades, a hobby
knife such as the Xacto, needle nose pliers for bending wire,
sandpaper and sanding blocks, straight pins for holding parts
in place during assembly on the plan (ceiling tile and
homosote make this easy), waxed paper or plastic wrap to
place over the plan to keep adhesives from sticking to it, a
metal straight edge/ruler, adhesives of choice for sticking
parts together, and glue sticks or dope for attaching covering
if required.
Winder: A hand-held mechanical device used to
conveniently and quickly wind the motors of rubber-powered
free flight models. A proper winder is a must-have piece of
equipment for successful rubber model flying! Winders have
a hand crank which turns a simple gear train connected to a
hooked output shaft. The hook holds one end of the rubber
motor; the other end remains attached to either the rear
rubber hook or propeller shaft of the firmly held or anchored
model (see stooge, above). The lubricated motor is then
stretched to three or four times its slack length and winding
is begun. With each single turn of the hand crank, the output
shaft turns anywhere from 5 to 20 times, depending on the
particular gear ratio of the winder. The person slowly
shortens the length of the stretch as he winds, starting to
come in at about 50% of desired turns and finishing with the
motor at its flying length. The motor is then carefully
transferred to the model. This classic technique allows many
more turns to be put into a rubber motor than would be
possible using manual winding of the propeller. Stretch
winding permits 1,000, 1,500, 2,000 or even more turns to
be quickly put into a rubber motor for longer flights. K&P
winders with their distinctive yellow bodies are an excellent
choice. See page 6 for a pictures of a model being wound
and a closeup of a typical winder.
Web Sites
There are many excellent web sites devoted to free flight
modeling. The following are just a few. Many of them have
links to still other sites. Google “free flight model airplanes
and see what happens! Also check You Tube for loads of free
flight videos!
Academy of Model Aeronautics:
http://modelaircraft.org / The AMA is the official
governing body of all phases of model aviation in the United
States. AMA Cub kits (see suggested models list on page 2)
in bulk can be ordered on this site.
DC Maxecuters club site:
www.his.com/~tschmitt/index.html The D.C.
Maxecuters are one of the best known free flight clubs in the
country, particularly where Flying Aces competition is
concerned. Lots of great scale information, photos, and
links.
Bill Kuhl’s AMA Cub web site:
www.luminet.net/~bkuhl/rubber.htm This site is a must
for anyone just starting out who’s interested in easy-to-build
models. Lots of good information, pictures, and many video
clips showing these fun aircraft in action. Bill’s site is
particularly aimed at youngsters who want to get a model into
the air. Highly recommended!
Darcy Whyte’s informational site: www.endlesslift.com/
The best site for beginners, educators, Scout leaders, and
anyone interested in learning what basic free flight model
aviation is all about, how to get started, building and flying
the Squirrel, an easily constructed and great flying rubber
band-powered model. The site has lots of contributions from
others as well. This site is a must for anyone wanting to
learn the basics of model plane building, flying, and
teaching.